Road-scraper



(No Model.) 2 Sheets-Sheet, 1.

O. MENDENHALL.

ROAD SGRAPER.

No. 278,991. Patented June 5,1883.

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(No Model.)

I I 2 Shee tsSheet 2. G. MENDENHALL.

ROAD SGRAPER.

No. 278,991. Patented June 5,1883.

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UNITE STATES PATENT OFFICE' OLARKSON MENDENHALL, OF MENDENHALL, PENNSYLVANIA.

ROAD-SCRAPER.

SPECIFICATION forming part of Letters Patent No. 278,991, dated June 5, 1883.

Application filed January II, 1883. (No model.)

To all whom it may concern: 7

Be .it known that I, CLARKSON MENDEN- HALL, a citizen of the United States, residing at Mendenhall, in the county of Chester and State of Pennsylvania, have invented new and useful Improvements in Road Scrapers, of which the following is a specification.

The present invention relates to that class of road or earth scrapers in which is employed a diagonal or obliquely-arranged scraper-board suspended from a wheeled supportingframe. V

The object of the invention is to apply the draft to the machine in such a manner that the scraper-board will be forced into the earth without the aid of the operator; to provide a novel supporting-frame for the scraping devices which will permit the entire machine to be turned at any angle and in the narrowest road with ease and facility; furthermore, to furnish a yielding connection between the scraper-board and supporting devices for obviating the jar of the draft animals and oper ator and breakage of the machine when obstructions are encountered. Another object of the invention is to permit the machine to be conveniently transported from place to place, and to be used either with or without large ground-wheels.

To these ends the invention consists in the construction and combination of devices, which will be fully described hereinafter, and then set forth in the claims.

In the drawings, Figure l is a perspective view of a road-scraper embodying my improvements, the supporting frame being mounted upon a single front wheelcarried by the draft-tongue, and the various parts being in position for operation. Fig. 2 is a longitudinal section of the scraper supported upon a pair of large ground-wheels and the front wheel ShOW'Il in Fig. 1. Fig. 3 is a detail view, showing the manner of connecting the scraperboard with the draft-beams and guide-handles, so as to insure a flexible or yielding connection between these devices. Fig. 4 is a .top view of a portion of the scraper-board and its arm for connecting it with the draft-beam and guide-handle, this figure also showing a portion of the transverse brace-rod and the spring-cushion. Fig. 5 is a detail view, showingthe means for connecting the front wheel with the supporting-frame.

The frame, which carries or supports the scraping devices and their adjuncts, consists of the beams A, which diverge from a front'platform or bolster, B, and are connected at their ends by a transverse bar, C. The platform or bolster B has secured to its under side a tubular shank, D, which is provided with a bottom head, (I, and passes through an opening made in the rear portion of a pair of hounds, E, between which the draft-tongue is pivoted. Brackets or pendent plates F, secured to the hounds, constitute a hanger, in which is journaled a ground-wheel, G, having a broad tread or periphery. The tongue-hounds and wheel can turn freely upon the supporting-f1'ame, and in this manner it will be apparent that the machine can be turned at any angle and in the narrowest road with ease and facility.

The connection between the frame and the wheel and devices connected therewith is insured by the headed shank D and the peculiar form of the opening in the hounds, this opening being so shaped that the headed shank can pass through the same when the tongue is turned at right angles to the frame; but when the tongue is in line with the frame or the bars A thereof the head of the shank extends across the opening of the hounds.

\V is the drivers seat, which is supported upon the beams in any suitable manner.

The scraping devices proper and the means for connecting the same with the wheeled sup-.

portingframe may be described as follows, viz A board, Z, set in an upright position and .having a suitable bottom scrapingedge, extends in an oblique or diagonal direction across the machine and is pivoted to apair of bifurcated angular arms, H, which consist of vertical branches and horizontal top portions, as is clearly shown in Fig. 1. The front ends or horizontal portions of. these angular arms are pivoted to the under sides of a pair of beams, I, which serve for transmitting the draft of the machine directly to the scraper board, and hence may-be termed draft beams. The front ends of these beams are connected with the platform or bolster B by suitable pivots or hinges, and their rear ends are jointed or pivoted to the horizontal bars J of a pair of guide-handles, K. These handlebars J are generally provided with tenons, which fit between the bifurcated rear ends of the draft-beams, and a pin passing transversely through these parts completes the pivotal connection. A pair of arms, L, extending in a rearward and upward direction from the upper edge of the scraper-board and rigidly connected therewith, are united with the handlebars J by a suitable pivot-connection, f, as is clearly shown in Fig. 3.

- The vertical adjustment ofthe scraper-frame relatively to the supporting-frame and the retention ofthe scraper-board at different heights from the ground, so as to vary the depth of penetration of the board, are effected by means of the notched plates M, which are pivoted to the "handle-bars and engage with pins m on the sides of the frame-beams A. A step or platform, N, is secured to a pair of diverging rods or a V-shaped frame, 0, which is pivoted to the inner sides of the beams A. This step or platform, when lowered, as shown in Fig. 1,

can be used by the operator of the scraper tostand or sit upon, and when not required for use it can be raised by swinging the frame 0 upon the top of the supporting frame or beams A. In order to prevent the lateral displacement of the scraper-board or to counteract any side strain or pressure to which it may be subjected, I provide the diagonal brace-rod I, which is secured to the arms H of the scraperboard, and has a vertical arm or rod, Q, connecting it with one of the beams A, as is shown in Fig. 1.

In order to permit the scraper-board to yield to such an extent as will prevent the breakage thereof or other parts of the machine and obviate the jarring of the horses or operator when a fast obstruction is encountered in the performance of the scraping open tion, I locate a spring or rubber cushion, R, between the upper portion of the scraper-board, on the rearwardly-extending arm thereof, and the pivoted angular arm which serves to connect the scraper with the draft-beam. It will be manifest that by connecting the scraper-board to the draft-beams in the above-described manner the draft is applied to 'the lower portion of the scraper at the rear thereof, and for this reason the draft falls directly opposite the work being done, and causes the working edge or surface of the scraper-board to penetrate the ground without the aid or intervention of any pressure the operator may apply to the same. In this manner the operation of the scraper is made comparatively light and easy, and no downward pressure upon the guide-handles is required to maintain the scrapenboard in a proper working position.

\Vhenever it is found expedient to employ alarger support upon the ground than is obtained by the front wheel above describedas, for instance, when moving the machine from place to place.I make use of an auxiliary supporting frame consisting of two large wheels, S, mounted onan axle, T, and a reach or frame, U, connected with the front of the frame-bars A or the platform B. A bolt, V, passed through the reach U and the headed shank D, as is shown in Fig. 2, serves to c011- nect this auxiliary frame with'the main frame.

Having thus described my invention, what 1 I claim is 1. In a road-scraper, the combination, with the oblique scraper and the draft-beams, of right-angled arms havingone of their ends piw oted'to therear side of the scraper and their other ends pivoted to the draft-beams, and the guide-handles pivoted to a support on the scraper, and having their forward ends pivotally connected with the rear ends of the draftbeams, substantially as described.

2. The combination of the guide-handles and the draft-beams jointed thereto, and the scraper-board having the forwardly and rearwardly proj ecting arms pivoted to said guidehandles anddraft-beams, with a wheeled supportingframe, .substantially as described.

The-combination of the main supportingframe having the front plate provided with the tubular-headed shank, and the front-supporting-wheel and its hanger, detachablyconnected with said headed shank, substantially as described.

i. The combination of the springs or elastic cushions R- with the pivoted scrapenboard Z, the arms H, carrying the latter, the draft-arms I, and the supporting-frame, substantially as described.

In aroad-scraper, the combination of the attachable and detachable wheeled supportingframe, consisting. of the axle, large groundwheels, and a reach having an apertured front end, wit-h the scraper-supp orting frame having a tubularbearing, the front ground-wheel turn ing thereon, and the connecting-pin passed through the reach into the tubular bearing, constructed and arranged to operate substanti'ally as. described.

6. The combination of the oblique horizontal brace-rod P and the vertical brace-rod Q, connected therewith at its lower end, with the right-angled arms H and theoblique scraper board Z, and the wheeled scraper-supporting frame connected with the upper end of the vertical brace-rod, all arranged for operation substantially as described.

Intestimony whereof I have hereunto set my hand in the presence of two subscribing witnesses. C. MENDENHALL. V

' Witnesses: v

JAMES .L. NoRRIs, J. A RUTHERFORD.

IIO 

